Fair Value - Schedule of Unobservable Input Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ (9,885)
Total realized and unrealized gains (losses) included in income	1,854
Total realized and unrealized gains (losses) included in OCI	0
Net purchases, issuances, sales and settlements	(234)
Net transfers in (out)	0
Ending balance	(8,265)		$ (8,265)
Total gains (losses) included in earnings	0
Total gains (losses) included in OCI	0
Asset Management
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,018	$ 12,329	14,134	$ 11,333
Total realized and unrealized gains (losses) included in income	(52)	43	182	354
Total realized and unrealized gains (losses) included in OCI	0	0	0	0
Net purchases, issuances, sales and settlements	589	131	1,819	873
Net transfers in (out)	(285)	(235)	(13,865)	(292)
Ending balance	2,270	12,268	2,270	12,268
Total gains (losses) included in earnings	16	75	42	228
Total gains (losses) included in OCI	0	0	0	0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	110	7,430	7,654	7,220
Total realized and unrealized gains (losses) included in income	(7)	18	(38)	88
Total realized and unrealized gains (losses) included in OCI	0	13	0	0
Net purchases, issuances, sales and settlements	36	(126)	1,149	27
Net transfers in (out)	0	0	(8,626)	0
Ending balance	139	7,335	139	7,335
Total gains (losses) included in earnings	0	(6)	0	(59)
Total gains (losses) included in OCI	0	0	0	0
Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	51,565		45,752
Total realized and unrealized gains (losses) included in income	(3,961)		(7,513)
Total realized and unrealized gains (losses) included in OCI	(266)		(338)
Net purchases, issuances, sales and settlements	805		4,178
Net transfers in (out)	(8,455)		(2,391)
Ending balance	39,688		39,688
Total gains (losses) included in earnings	(1,085)		(1,988)
Total gains (losses) included in OCI	(264)		(315)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance			(11,059)
Total realized and unrealized gains (losses) included in income			3,130
Total realized and unrealized gains (losses) included in OCI			0
Net purchases, issuances, sales and settlements	(234)		(336)
Net transfers in (out)	0		0
Ending balance	(8,265)		(8,265)
Total gains (losses) included in earnings			0
Total gains (losses) included in OCI			0
Contingent consideration obligations | Asset Management
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	110	114	126	120
Total realized and unrealized gains (losses) included in income	(7)	16	(10)	22
Total realized and unrealized gains (losses) included in OCI	0	0	0	0
Net purchases, issuances, sales and settlements	36	(1)	23	(13)
Net transfers in (out)	0	0	0	0
Ending balance	139	129	139	129
Total gains (losses) included in earnings	0	0	0	0
Total gains (losses) included in OCI	0	0	0	0
Derivative liabilities | Retirement Services
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(3)		(3)
Total realized and unrealized gains (losses) included in income	2		2
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	(1)		(1)
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Debt | Asset Management
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance				7,100
Total realized and unrealized gains (losses) included in income				66
Total realized and unrealized gains (losses) included in OCI				0
Net purchases, issuances, sales and settlements	0	(125)	1,126	40
Net transfers in (out)	0	0	(8,626)	0
Ending balance		7,206		7,206
Total gains (losses) included in earnings				(59)
Total gains (losses) included in OCI				0
Investments, at fair value | Asset Management
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,087		946
Total realized and unrealized gains (losses) included in income	(9)		9
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	1	(3)	102	(3)
Net transfers in (out)	1	1	23	1
Ending balance	1,080		1,080
Total gains (losses) included in earnings	31		59
Total gains (losses) included in OCI	0		0
Trading securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	90		69
Total realized and unrealized gains (losses) included in income	(1)		(6)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	2		8
Net transfers in (out)	(33)		(13)
Ending balance	58		58
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Equity securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	438		429
Total realized and unrealized gains (losses) included in income	8		17
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	(3)		(3)
Net transfers in (out)	(381)		(381)
Ending balance	62		62
Total gains (losses) included in earnings	8		16
Total gains (losses) included in OCI	0		0
Mortgage loans | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	23,696		21,154
Total realized and unrealized gains (losses) included in income	(1,027)		(1,771)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	2,549		5,835
Net transfers in (out)	0		0
Ending balance	25,218		25,218
Total gains (losses) included in earnings	(1,025)		(1,767)
Total gains (losses) included in OCI	0		0
Investment funds | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	19		18
Total realized and unrealized gains (losses) included in income	0		1
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	19		19
Total gains (losses) included in earnings	0		1
Total gains (losses) included in OCI	0		0
Funds withheld at interest – embedded derivative | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(1,882)		0
Total realized and unrealized gains (losses) included in income	(2,076)		(3,958)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	(3,958)		(3,958)
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Short-term investments | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	59		29
Total realized and unrealized gains (losses) included in income	0		0
Total realized and unrealized gains (losses) included in OCI	(1)		(1)
Net purchases, issuances, sales and settlements	0		30
Net transfers in (out)	0		0
Ending balance	58		58
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Other investments | Asset Management
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		381		370
Total realized and unrealized gains (losses) included in income		11		22
Total realized and unrealized gains (losses) included in OCI		0		0
Net purchases, issuances, sales and settlements		(3)		(3)
Net transfers in (out)		1		1
Ending balance		390		390
Total gains (losses) included in earnings		9		29
Total gains (losses) included in OCI		0		0
Reinsurance recoverable | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,814		1,991
Total realized and unrealized gains (losses) included in income	(234)		(411)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	1,580		1,580
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Foreign governments | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2		2
Total realized and unrealized gains (losses) included in income	0		0
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	2		2
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Corporate | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,499		1,339
Total realized and unrealized gains (losses) included in income	0		(3)
Total realized and unrealized gains (losses) included in OCI	(58)		(77)
Net purchases, issuances, sales and settlements	40		180
Net transfers in (out)	107		149
Ending balance	1,588		1,588
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	(58)		(76)
CLO | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	5		14
Total realized and unrealized gains (losses) included in income	0		(2)
Total realized and unrealized gains (losses) included in OCI	(3)		0
Net purchases, issuances, sales and settlements	(2)		(12)
Net transfers in (out)	0		0
Ending balance	0		0
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
ABS | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	3,783		3,619
Total realized and unrealized gains (losses) included in income	2		7
Total realized and unrealized gains (losses) included in OCI	(65)		(95)
Net purchases, issuances, sales and settlements	148		0
Net transfers in (out)	(274)		63
Ending balance	3,594		3,594
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	(66)		(89)
CMBS | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	10		43
Total realized and unrealized gains (losses) included in income	0		0
Total realized and unrealized gains (losses) included in OCI	0		(17)
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	(10)		(26)
Ending balance	0		0
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		1
RMBS | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0		0
Total realized and unrealized gains (losses) included in income	0		0
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	68		68
Net transfers in (out)	0		0
Ending balance	68		68
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Embedded derivatives | Interest sensitive contract liabilities | Retirement Services
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(6,704)		(7,559)
Total realized and unrealized gains (losses) included in income	1,487		2,444
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	(234)		(336)
Net transfers in (out)	0		0
Ending balance	(5,451)		(5,451)
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Universal life benefits | Interest sensitive contract liabilities | Retirement Services
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(1,096)		(1,235)
Total realized and unrealized gains (losses) included in income	153		292
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	(943)		(943)
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
AmerUs closed block | Future policy benefits | Retirement Services
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(1,378)		(1,520)
Total realized and unrealized gains (losses) included in income	131		273
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	(1,247)		(1,247)
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
ILICO closed block and life benefits | Future policy benefits | Retirement Services
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(704)		(742)
Total realized and unrealized gains (losses) included in income	81		119
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	(623)		(623)
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
VIE, Primary Beneficiary | Debt | Asset Management
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		7,316	7,528
Total realized and unrealized gains (losses) included in income		2	(28)
Total realized and unrealized gains (losses) included in OCI		13	0
Net purchases, issuances, sales and settlements		(125)	1,126
Net transfers in (out)		0	(8,626)
Ending balance	0	7,206	0	7,206
Total gains (losses) included in earnings		(6)	0
Total gains (losses) included in OCI		0	0
VIE, Primary Beneficiary | Investments, at fair value | Asset Management
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	931	11,948	13,188	10,963
Total realized and unrealized gains (losses) included in income	(43)	32	173	332
Total realized and unrealized gains (losses) included in OCI	0	0	0	0
Net purchases, issuances, sales and settlements	588	134	1,717	876
Net transfers in (out)	(286)	(236)	(13,888)	(293)
Ending balance	1,190	11,878	1,190	11,878
Total gains (losses) included in earnings	(15)	66	(17)	199
Total gains (losses) included in OCI	0	$ 0	0	$ 0
VIE, Primary Beneficiary | Trading securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0		0
Total realized and unrealized gains (losses) included in income	0		0
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	330		330
Ending balance	330		330
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
VIE, Primary Beneficiary | Mortgage loans | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,880		2,152
Total realized and unrealized gains (losses) included in income	(50)		(170)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	(2)		(154)
Net transfers in (out)	(202)		(202)
Ending balance	1,626		1,626
Total gains (losses) included in earnings	(50)		(170)
Total gains (losses) included in OCI	0		0
VIE, Primary Beneficiary | Investment funds | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	10,577		1,297
Total realized and unrealized gains (losses) included in income	33		28
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	(77)		161
Net transfers in (out)	(9,480)		(433)
Ending balance	1,053		1,053
Total gains (losses) included in earnings	27		28
Total gains (losses) included in OCI	0		0
VIE, Primary Beneficiary | Other investments | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,902		0
Total realized and unrealized gains (losses) included in income	0		0
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	31		31
Net transfers in (out)	(1,902)		0
Ending balance	31		31
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Affiliated Entity | Trading securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	252		1,771
Total realized and unrealized gains (losses) included in income	4		(1)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	(808)		(1,062)
Net transfers in (out)	1,443		183
Ending balance	891		891
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Affiliated Entity | Equity securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	166		284
Total realized and unrealized gains (losses) included in income	(9)		(14)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	(119)		(119)
Net transfers in (out)	125		12
Ending balance	163		163
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Affiliated Entity | Mortgage loans | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,456		1,369
Total realized and unrealized gains (losses) included in income	(72)		(124)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	32		171
Net transfers in (out)	0		0
Ending balance	1,416		1,416
Total gains (losses) included in earnings	(73)		(124)
Total gains (losses) included in OCI	0		0
Affiliated Entity | Investment funds | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	814		2,855
Total realized and unrealized gains (losses) included in income	4		28
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		(34)
Net transfers in (out)	0		(2,031)
Ending balance	818		818
Total gains (losses) included in earnings	28		28
Total gains (losses) included in OCI	0		0
Affiliated Entity | Funds withheld at interest – embedded derivative | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(570)		0
Total realized and unrealized gains (losses) included in income	(559)		(1,129)
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	0		0
Ending balance	(1,129)		(1,129)
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Affiliated Entity | Short-term investments | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	53		0
Total realized and unrealized gains (losses) included in income	0		0
Total realized and unrealized gains (losses) included in OCI	0		0
Net purchases, issuances, sales and settlements	0		53
Net transfers in (out)	(53)		(53)
Ending balance	0		0
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	0		0
Affiliated Entity | Corporate | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	761		670
Total realized and unrealized gains (losses) included in income	0		(4)
Total realized and unrealized gains (losses) included in OCI	(7)		(6)
Net purchases, issuances, sales and settlements	42		136
Net transfers in (out)	53		53
Ending balance	849		849
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	(7)		(6)
Affiliated Entity | CLO | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	332		202
Total realized and unrealized gains (losses) included in income	0		0
Total realized and unrealized gains (losses) included in OCI	(7)		(7)
Net purchases, issuances, sales and settlements	0		130
Net transfers in (out)	0		0
Ending balance	325		325
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	(7)		(7)
Affiliated Entity | ABS | AFS securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	4,409		6,445
Total realized and unrealized gains (losses) included in income	16		(1)
Total realized and unrealized gains (losses) included in OCI	(125)		(135)
Net purchases, issuances, sales and settlements	(1,096)		(1,241)
Net transfers in (out)	1,822		(42)
Ending balance	5,026		5,026
Total gains (losses) included in earnings	0		0
Total gains (losses) included in OCI	(126)		(138)
Affiliated Entity | VIE, Primary Beneficiary | Trading securities | Retirement Services
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net purchases, issuances, sales and settlements	0		0
Net transfers in (out)	$ 330		$ 330